Using YapSat figures
You can use the figures and diagrams from the solved problems in course notes, presentations, and homework. There are three conditions: don't use them commercially, credit YapSat, and link to the license. If you changed a figure, say so.
The figures are licensed under Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0). The license covers the figures only, not the solution text or the site's code.
For commercial use, such as a paid course or a book for sale, write to [email protected].
Example credit
Figure: YapSat (yapsat.org), CC BY-NC 4.0 International, creativecommons.org/licenses/by-nc/4.0